Test basic functionality using RSelenium

[rplzzz]

Test goals

• Load a test data set
• Display a map of a query without a difference scenario
• Display a map with a difference scenario
• Display a bar plot with all regions
• Display a bar plot filtered to several randomly selected regions
• Load a new data set
• Display a map of the new data set

Resources

• RSelenium vignette
• GUI Testing on Travis
• shinytest is similar in concept, but a slightly different approach.